Valence state of B and Ta cations in the AB(1/2)Ta(1/2)O(3) ceramics (A = Ca, Sr, Ba, Pb; B = Fe, Sc) from X-ray photoelectron and Mossbauer spectroscopy data
文献类型：期刊论文
| 作者 | Kozakov, AT; Kochur, AG; Nikolskii, AV; Raevski, IP; Kubrin, SP; Raevskaya, SI; Titov, VV; Gusev, AA; Isupov, VP; Li, G |
| 刊名 | JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA
 |
| 出版日期 | 2020-02-01 |
| ISSN号 | 0368-2048 |
| DOI | 10.1016/j.elspec.2019.146918 |
| 文献子类 | Article |
| 英文摘要 | Valence states of iron and tantalum ions in eight ceramic compounds with a perovskite structure A(x)B(y)Ta(z)O(3+sigma) (A = Pb, Ba, Sr, Ca; B = Fe, Sc) were studied, including the compounds A(x)Fe(y)Ta(z)O(3+sigma), (A = Ba, Sr, Ca) annealed in a reducing atmosphere of CO. In a number of samples, the presence of Fe2+ ions was detected along with Fe3+. Relative fractions of the Fe2+ and Fe3+ ions were obtained by a full-profile fitting of the Fe2p X-ray photoelectron spectra (XPS) by superposition of experimental spectra of Fe2+ and Fe3+ ions, and by the Mossbauer spectroscopy method. The presence of Ta4+ ions along with Ta4+ ions was detected. The samples subjected to high-temperature annealing in the atmosphere of CO contain only Ta4+ ions. A modification of a standard methodology of the XPS determination of elemental compositions is proposed for the cases when the O1s-spectra have high-energy "tails"; it is based on ensuring the electrical neutrality of the samples. Changes in the elemental and ionic composition of the samples reflect the effect of the annealing of samples in a reducing atmosphere of CO. |
| WOS关键词 | MAGNETIC PHASE-TRANSITIONS ; TANTALUM OXIDE-FILMS ; ELECTRONIC-STRUCTURE ; PYROELECTRIC RESPONSE ; DIELECTRIC-PROPERTIES ; CRYSTAL-STRUCTURE ; DIFFERING DEGREE ; LOW-TEMPERATURE ; THIN TANTALUM ; SOL-GEL |
| WOS研究方向 | Spectroscopy |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28333]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Kozakov, AT,Kochur, AG,Nikolskii, AV,et al. Valence state of B and Ta cations in the AB(1/2)Ta(1/2)O(3) ceramics (A = Ca, Sr, Ba, Pb; B = Fe, Sc) from X-ray photoelectron and Mossbauer spectroscopy data[J]. JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA,2020. |
| APA | Kozakov, AT.,Kochur, AG.,Nikolskii, AV.,Raevski, IP.,Kubrin, SP.,...&Zakharchenko, IN.(2020).Valence state of B and Ta cations in the AB(1/2)Ta(1/2)O(3) ceramics (A = Ca, Sr, Ba, Pb; B = Fe, Sc) from X-ray photoelectron and Mossbauer spectroscopy data.JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. |
| MLA | Kozakov, AT,et al."Valence state of B and Ta cations in the AB(1/2)Ta(1/2)O(3) ceramics (A = Ca, Sr, Ba, Pb; B = Fe, Sc) from X-ray photoelectron and Mossbauer spectroscopy data".JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA (2020). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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